Table 3 Statistics of the population used (dairy cows from Luxembourg)
From: Inversion of a part of the numerator relationship matrix using pedigree information
Total number of animals | 387 499 |
Number of cows | 366 773 |
Number of bulls | 20 726 |
Number of animals by birth year class: | |
Before 1950 | 5441 |
From 1950 to 1974 | 24 577 |
From 1975 to 1999 | 229 016 |
From 2000 to 2012 | 128 465 |
Maximum number of generations of pedigree | 39 |
Average number of generations 1 for animals in different birth year classes: | |
Before 1950 | 3.28 |
From 1950 to 1974 | 6.49 |
From 1975 to 1999 | 19.03 |
From 2000 to 2012 | 25.11 |
Pedigree completeness: number of animals with (% of the pedigree): | |
Both parents unknown: | 70 167 (18.1%) |
Dam known, sire unknown | 69 721 (18.0%) |
Sire known, dam unknown | 17 141 (4.4%) |
Both parents known | 230 470 (59.5%) |